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Linear titration plots for the potentiometric titration of partially neutralized weak acids and bases

Lineare Titrationskurven für die potentiometrische Titration von teilweise neutralisierten schwachen Säuren und Basen

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Zusammenfassung

Lineare Titrationskurven werden für potentiometrische Titrationen von schwachen Säuren und Basen, die bereits teilweise neutralisiert sind, abgeleitet. Eine Fortran-Prozedur berechnet sowohl die Gesamtkonzentration der Säure oder Base als auch den Neutralisationsgrad. Das Rechenprogramm erfaßt auch die Anwesenheit einer starken Säure zusammen mit einer schwachen Säure oder einer starken Base zusammen mit einer schwachen Base. Die schwache Säure oder Base darf mehrere überlappende Dissoziationsstufen aufweisen. Aktivitätskoeffizienten werden mittels eines Iterationsverfahrens berechnet.

Summary

A linear titration plot method has been derived for the determination of partially neutralized weak acids or weak bases from pH-titration data. A FORTRAN program calculates the total concentration of acid or base in solution as well as the fraction remaining to be neutralized. The program also detects the presence of strong acid with a weak acid or a strong base with a weak base. The weak acid or base may be polyfunctional with overlapping dissociation steps. Activity coefficients are calculated iteratively.

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Authors and Affiliations

  1. Central Electricity Research Laboratories, Kelvin Avenue, KT22 7SE, Leatherhead, Surrey, England

    Derek Midgley

  2. Edinburgh Regional Computing Centre, University of Edinburgh, The Kings Buildings, Mayfield Road, EH9 3JZ, Edinburgh, Scotland

    Colin McCallum

Authors
  1. Derek Midgley
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  2. Colin McCallum
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Midgley, D., McCallum, C. Linear titration plots for the potentiometric titration of partially neutralized weak acids and bases. Z. Anal. Chem. 290, 230–233 (1978). https://doi.org/10.1007/BF00487565

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  • DOI: https://doi.org/10.1007/BF00487565

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